Phone Spam - Project
The entire project is Documented and open (except for the server-side part, for security reasons).Feel free to use this schematics.
| Phase 1 - caller ID Read caller ID from Tip and Ring with the HT9032D decoder chip. |
| Phase 2 - caller ID Arduino code to get the caller ID. |
| Phase 3 - WiFi chip A small and cheap WiFi Transmitter. |
| Phase 4 - Access Point How to connect to an access point. |
| Phase 5 - Post Request Sending phone number to a server. |
| Phase 6 - LCD display A LCD display for the caller name. |
Phase 3 - WiFi chipThe ESP8266This is probably the simpliest and cheapest WiFi chip we can find. It is arrived on the market at the end of 2014 and sold worldwide at beginning of 2015. This module has 8 PINS too:
It has 96kb of RAM and a lot of IOs, so probably I could write the entire code directly on this chip... But there is no or poor documentation, so the Arduino is not bad for it, also if we have only 2kb. What we need is RX and TX for the AT-commands and 3.3V (no it doesn't work with 5V!). There are a lot of sellers, so probably not every ESP8266 ESP-01 is the same... Some modules become really hot, other have a wrong resistor, others will destroy the firmware if you send the wrong AT commands, and so on... Schematics There are different ways to link it to the arduino, this one is the easiest. A better way would be with a logic level converter. Remember to pull up CH_PD, RESET and GPIO0. There are a lot of firmware out there. Maybe flashing to a stable one is a good way if the module doesn't work anymore! This firmware v0.9.5.2 AT Firmware.bin from www.electrodragon.com seems to be working very well and you can also read the GPIO2 with the AT+CIOREAD=2 command. DocumentationAs said, there is not really a documentation, it was hacked by reverse engineering. There are some good links for this chip:https://nurdspace.nl/ESP8266 Datasheets http://www.esp8266.com/ Forum http://www.electrodragon.com/w/ESP8266 Instructions https://room-15.github.io/ AT commands Comments: |