Designed for 32 1A loads. Designed for 1A loads. Fits all Mega board variants: Mega, MegaADK, Due, Ethermega, Etherdue. Board size is 130x77mm, overlapping the Mega board edges. Kits for board as pictured with all headers, $13.50 to US addresses, includes padded envelope shipping via USPS & paypal fee. Add USPS shipping & paypal fee. 12.85 each plus shipping & paypal fee. Builds on the original Bobuino, makes USB/Serial easier to assemble, adds lots of connection options besides just shields - signal/power/ground available at each pin location. Barrel jack or screw terminal options for providing coil power & LED. For an on, space or logic 0 state, the driver's A terminal is positive relative to the B terminal. Extra 3.3V/Gnd screw terminal added along with 4 more 5V/Gnd screw terminals. 32 P-channel MOSFET board with screw terminals - when you need to Source current vs sink current. Both shown with screw terminals for coil power. 3 boards daisychained. Connect signals from 1st to 2nd to 3rd, add power & Gnd to each. Care must be taken that an SC connection, especially over long cable runs, does not result in an attempt to connect disparate grounds together - it is wise to add some current limiting to the SC connection.
Care must be taken when using A/B naming. More details on this page for file naming and re-setting up the card if needed. More pricey than N-channel as the P-MOSFETs and TPIC6C595 shift registers cost more. TXsoil is a compact and low consumption sensor that can measure and transmit the humidity of the ground WiFi or RF or GSM. GSM 58,90 EUR Sonda Umidità addiz. TXSoil can transmit the humidity to a Web server or to a VisualVision's display / concentrator such as DisplayRX or ControlHUB or RXTXeasy GSM - with adjustable interval, remaining for the rest of the time in standby with very low consumption. Basically, therefore, they can be used with RXTXeasy GSM or DisplayRX or ControlHUB.. The 10uF can be mounted flatter, or on the back. We tried to build an organic system so that whoever gets a TXtemp, TXsoil sensor or a bridge for RS232 or ModBus sensors and devices like TXdata can immediately use them without wasting time in configurations (and we also took the opportunity to insert some things into our system some "extra" not foreseen by the standards!).
Access control systems: Rs485 cables are mainly used to connect and transmit data between access control devices such as security gates, RFID cards, or time attendance machines and the control center. Control and monitoring systems: A single pair of rs485 signal cable can connect up to 32 devices, with a signal transmission distance of up to 1200m. Therefore, using rs485 cables is an ideal choice for industrial control and monitoring systems, rs485 cable especially those with large-scale and high dispersion. It also defines three generator interface points (signal lines); A, B and C. The data is transmitted on A and B. C is a ground reference. As a rule of thumb, the speed in bit/s multiplied by the length in metres should not exceed 108. Thus a 50-meter cable should not signal faster than 2 Mbit/s. Under some conditions it can be used up to data transmission speeds of 64 Mbit/s. Not only that, it can also be used to know if there is water in any place or not; for example, positioned appropriately, it can be used to know if a tank or a drinking trough is full or empty, or if a well has reached a certain level (eg to stop pumping water).
After connecting as for point B, in the Settings it is possible to define a name for the device, and if the reading periodicity is less than 250 minutes, you can set an interval of hours in which the reading is not carried out / transmitted (for example you can disable the night). Inputs are daisychained to a second set of contacts for easy daisychaining. The equipment located along a set of RS-485 wires are interchangeably called nodes, stations or devices. Converters between RS-485 and RS-232 are available to allow a personal computer to communicate with remote devices. RS-485 does not define a communication protocol; merely an electrical interface. RS-485 standard conformant drivers provide a differential output of a minimum 1.5 V across a 54-Ω load, whereas standard conformant receivers detect a differential input down to 200 mV. This robustness is the main reason why RS-485 is well suited for long-distance networking in noisy environment. If A is negative with respect to B, the state is binary 1. The reversed polarity (A positive with respect to B) is binary 0. The standard does not assign any logic function to the two states.
Cross Roads Electronics
by Muhammad Tarleton (2024-07-07)
Designed for 32 1A loads. Designed for 1A loads. Fits all Mega board variants: Mega, MegaADK, Due, Ethermega, Etherdue. Board size is 130x77mm, overlapping the Mega board edges. Kits for board as pictured with all headers, $13.50 to US addresses, includes padded envelope shipping via USPS & paypal fee. Add USPS shipping & paypal fee. 12.85 each plus shipping & paypal fee. Builds on the original Bobuino, makes USB/Serial easier to assemble, adds lots of connection options besides just shields - signal/power/ground available at each pin location. Barrel jack or screw terminal options for providing coil power & LED. For an on, space or logic 0 state, the driver's A terminal is positive relative to the B terminal. Extra 3.3V/Gnd screw terminal added along with 4 more 5V/Gnd screw terminals. 32 P-channel MOSFET board with screw terminals - when you need to Source current vs sink current. Both shown with screw terminals for coil power. 3 boards daisychained. Connect signals from 1st to 2nd to 3rd, add power & Gnd to each. Care must be taken that an SC connection, especially over long cable runs, does not result in an attempt to connect disparate grounds together - it is wise to add some current limiting to the SC connection.
Care must be taken when using A/B naming. More details on this page for file naming and re-setting up the card if needed. More pricey than N-channel as the P-MOSFETs and TPIC6C595 shift registers cost more. TXsoil is a compact and low consumption sensor that can measure and transmit the humidity of the ground WiFi or RF or GSM. GSM 58,90 EUR Sonda Umidità addiz. TXSoil can transmit the humidity to a Web server or to a VisualVision's display / concentrator such as DisplayRX or ControlHUB or RXTXeasy GSM - with adjustable interval, remaining for the rest of the time in standby with very low consumption. Basically, therefore, they can be used with RXTXeasy GSM or DisplayRX or ControlHUB.. The 10uF can be mounted flatter, or on the back. We tried to build an organic system so that whoever gets a TXtemp, TXsoil sensor or a bridge for RS232 or ModBus sensors and devices like TXdata can immediately use them without wasting time in configurations (and we also took the opportunity to insert some things into our system some "extra" not foreseen by the standards!).
Access control systems: Rs485 cables are mainly used to connect and transmit data between access control devices such as security gates, RFID cards, or time attendance machines and the control center. Control and monitoring systems: A single pair of rs485 signal cable can connect up to 32 devices, with a signal transmission distance of up to 1200m. Therefore, using rs485 cables is an ideal choice for industrial control and monitoring systems, rs485 cable especially those with large-scale and high dispersion. It also defines three generator interface points (signal lines); A, B and C. The data is transmitted on A and B. C is a ground reference. As a rule of thumb, the speed in bit/s multiplied by the length in metres should not exceed 108. Thus a 50-meter cable should not signal faster than 2 Mbit/s. Under some conditions it can be used up to data transmission speeds of 64 Mbit/s. Not only that, it can also be used to know if there is water in any place or not; for example, positioned appropriately, it can be used to know if a tank or a drinking trough is full or empty, or if a well has reached a certain level (eg to stop pumping water).
After connecting as for point B, in the Settings it is possible to define a name for the device, and if the reading periodicity is less than 250 minutes, you can set an interval of hours in which the reading is not carried out / transmitted (for example you can disable the night). Inputs are daisychained to a second set of contacts for easy daisychaining. The equipment located along a set of RS-485 wires are interchangeably called nodes, stations or devices. Converters between RS-485 and RS-232 are available to allow a personal computer to communicate with remote devices. RS-485 does not define a communication protocol; merely an electrical interface. RS-485 standard conformant drivers provide a differential output of a minimum 1.5 V across a 54-Ω load, whereas standard conformant receivers detect a differential input down to 200 mV. This robustness is the main reason why RS-485 is well suited for long-distance networking in noisy environment. If A is negative with respect to B, the state is binary 1. The reversed polarity (A positive with respect to B) is binary 0. The standard does not assign any logic function to the two states.