Search found 240 matches

by paulvha
Fri Aug 17, 2018 3:49 am
Forum: Projects
Topic: Switching mains with a Raspberry [PHOTO]
Replies: 1
Views: 36

Re: Switching mains with a Raspberry [PHOTO]

others tried as well and had success with some different values : https://electronics.stackexchange.com/questions/345845/triac-not-getting-switched-by-optoisolator. Another one needs translation (with chrome?) : http://panamahitek.com/herramienta-de-control-para-arduino-el-triac-conmutador-para-corr...
by paulvha
Mon Aug 13, 2018 9:29 am
Forum: Wireless/RF
Topic: ESP8266 serial AT in Korean
Replies: 2
Views: 90

Re: ESP8266 serial AT in Korean

Might the "Korean" be the fact that you have the wrong baudrate on terminal emulator? E.g. 115200 instead of 9600 or the other way around ? or maybe you do not have 8bit, 1 stop and NO parity?
by paulvha
Mon Aug 13, 2018 5:23 am
Forum: SparkFun Product Questions
Topic: BigEasy pins
Replies: 2
Views: 39

Re: BigEasy pins

isn't that documented in the hookup guide, pin description : https://learn.sparkfun.com/tutorials/big-easy-driver-hookup-guide?_ga=2.193493865.511682720.1533723701-650418331.1501756006 : Each pin present on the board has two connection points. The first, which are the pins closest to the center of t...
by paulvha
Mon Aug 13, 2018 4:25 am
Forum: SparkFun Product Questions
Topic: Problem running WiFi shield as a server
Replies: 1
Views: 41

Re: Problem running WiFi shield as a server

I have spend a lot of time debugging and updating the Sparkfun driver. I created a version with not only bug fixing, but also add features that were not implemented +more examples and documentation. It is backward compatible with the SparkFun driver, you need to make sure include the right ".h" file...
by paulvha
Sat Aug 11, 2018 6:18 am
Forum: SparkFun Product Questions
Topic: SCD30 not working with ESP8266
Replies: 16
Views: 368

Re: SCD30 not working with ESP8266

Just in case it is still needed/wanted, maybe for others, I have created an updated version of the driver that works with the ESP8266; https://github.com/paulvha/scd30 More work to be done.... but for now : * Added ESP8266 board detection in begin() to support the ESP8266 clock stretching * Added se...
by paulvha
Wed Aug 01, 2018 8:11 am
Forum: SparkFun Product Questions
Topic: Trouble with Simultaneous RFID Tag Reader
Replies: 8
Views: 108

Re: Trouble with Simultaneous RFID Tag Reader

good to hear you found a solution and the board is working. if not, let me know I will sent you the compiled firmwareload for windows to try.
regards,
Paul
by paulvha
Mon Jul 30, 2018 1:09 pm
Forum: SparkFun Product Questions
Topic: Trouble with Simultaneous RFID Tag Reader
Replies: 8
Views: 108

Re: Trouble with Simultaneous RFID Tag Reader

Too bad on the reset... but maybe.... if you downloaded the ThingMagic API, There is a firmwareload.c in the samples directory: mercury1.29.4.34/c/src/samples. it seems it will try to load if the image is corrupted anyway. From the source: "Error: App image corrupt. Proceeding to load firmware, anyw...
by paulvha
Mon Jul 30, 2018 8:49 am
Forum: General Chit Chat
Topic: RFID M6e stops reading after about 10 seconds
Replies: 3
Views: 175

Re: RFID M6e stops reading after about 10 seconds

I have connected the shield directly to the USB on the raspberry PI and used the ThingMagic API to read. All worked like a sharm. Given you put the redboard in between, I assume you use softserial to connect to the RFID shield (as that is in the sketch). Try a lower speed like 9600, with setupNano(9...
by paulvha
Sat Jul 28, 2018 9:43 am
Forum: SparkFun Product Questions
Topic: Trouble with Simultaneous RFID Tag Reader
Replies: 8
Views: 108

Re: Trouble with Simultaneous RFID Tag Reader

in correction to the previous post, the pin on the Nano seem to use is pin 28 not 17. Pin 28 is NOT connected according to the schematics. Pin 28 acting as reset is not documented (not on the ones that i have). Still make sure to have the right pin.... If you hold the connections (TXD, RXD etc) on t...
by paulvha
Sat Jul 28, 2018 9:04 am
Forum: SparkFun Product Questions
Topic: Trouble with Simultaneous RFID Tag Reader
Replies: 8
Views: 108

Re: Trouble with Simultaneous RFID Tag Reader

WARNING WARNING ... I have just looked up the schematic of the Sparkfun shield. the pin 17 that is referred in the ThingMagic post is hardwired to VCC. You can not bring this pin to GND uncontrolled as proposed as it would cause a short circuit.
by paulvha
Sat Jul 28, 2018 4:35 am
Forum: General Chit Chat
Topic: RFID M6e stops reading after about 10 seconds
Replies: 3
Views: 175

Re: RFID M6e stops reading after about 10 seconds

Try with reducing the read/write power to max 500mW.
by paulvha
Sat Jul 28, 2018 1:03 am
Forum: SparkFun Product Questions
Topic: Trouble with Simultaneous RFID Tag Reader
Replies: 8
Views: 108

Re: Trouble with Simultaneous RFID Tag Reader

The latest firmware for a nano 1.7.3. I assume the 1.29 refers to the API that was to create the URA. At the start of the program it will try to obtain the hardware & firmware level from the shield and that seems to fail. There is an old forum from THingMagic (now a Jadak company) that has a referen...
by paulvha
Wed Jul 25, 2018 12:52 am
Forum: SparkFun Product Questions
Topic: Multiple TFMini Sensors Error with Arduino Uno Software Serial
Replies: 7
Views: 123

Re: Multiple TFMini Sensors Error with Arduino Uno Software Serial

@SoftwareSerial: a UART is normally handling the incoming bits to compose the byte and store the byte in an internal UART buffer. It interrupts the main processor when at least one byte is available so the main processor can read from the buffer the byte(s). With SoftwareSerial / Softserial, all wha...
by paulvha
Tue Jul 24, 2018 1:28 pm
Forum: SparkFun Product Questions
Topic: Multiple TFMini Sensors Error with Arduino Uno Software Serial
Replies: 7
Views: 123

Re: Multiple TFMini Sensors Error with Arduino Uno Software Serial

The standard Softserial is only supporting 1 input-pin. It does this by enabling an interrupt to the running program at a change of level on the input-pin, disable further interrupts and then sampling the input-pin (timing based on the baudrate) for the total of 8 bits to compile a complete byte. Th...
by paulvha
Mon Jul 23, 2018 11:09 pm
Forum: SparkFun Product Questions
Topic: Multiple TFMini Sensors Error with Arduino Uno Software Serial
Replies: 7
Views: 123

Re: Multiple TFMini Sensors Error with Arduino Uno Software Serial

Try a lower speed with myserial.begin() of myserial2.begin().