# Color transfer with EnviroPHAT and UnicornPHAT
**URL:** https://forums.pimoroni.com/t/color-transfer-with-envirophat-and-unicornphat/2703
**Category:** Projects
**Created:** [July 20, 2016, 10:36pm UTC](https://forums.pimoroni.com/t/color-transfer-with-envirophat-and-unicornphat/2703 "2016-07-20T22:36:35Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@allo](https://forums.pimoroni.com/u/allo)
#### Post date: [July 20, 2016, 10:36pm UTC](https://forums.pimoroni.com/t/color-transfer-with-envirophat-and-unicornphat/2703/1 "2016-07-20T22:36:35Z")
To test the new Enviro PHAT color sensor, i though i could couple it with the Unicorn-PHAT with its RGB-LEDs.
You need:
- 2 Raspberry Pi (i tested with two pi zero)
- Enviro PHAT
- Unicorn PHAT
Install the needed libraries, put both Raspberry Pi on a network.
Script for the Unicorn-PHAT Raspberry Pi (server side):
```
import SocketServer
import unicornhat as u
u.set_layout(u.PHAT)
def set_color(r, g, b):
for x, y in [divmod(i, 4) for i in xrange(32)]:
u.set_pixel(x, y, int(r), int(g), int(b))
u.show()
class ColorHandler(SocketServer.BaseRequestHandler):
def handle(self):
try:
data = self.request[0].strip()
r, g, b = data.split(",")
set_color(r, g, b)
except Exception, e:
print "Bullshit received!", e
server = SocketServer.UDPServer(("0", 2000), ColorHandler)
server.serve_forever()
```
Code on the Enviro-PHAT Raspberry Pi (client):
```
import envirophat as e
import time, socket
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM);sock.connect(("server-hostname-or-ip", 2000))
while True:
time.sleep(0.1)
sock.sendall("{0},{1},{2}\n".format(*e.light.rgb()))
sock.close()
```
Now try some light of different colors on the Enviro-PHAT and see the unicorn PHAT illuminate in that color.
Note that the code is very simple, you should not catch all `Exception`s without proper handling on the server side and provide some reaonable socket closing on the client side (like catching `KeyboardInterrupt`). But it works for basic testing of both hats.
---
### Author:  [@sandyjmacdonald](https://forums.pimoroni.com/u/sandyjmacdonald)
#### Post date: [July 21, 2016, 3:24pm UTC](https://forums.pimoroni.com/t/color-transfer-with-envirophat-and-unicornphat/2703/2 "2016-07-21T15:24:45Z")
Very nice! I particularly like your error catch message!
---
### Author:  [@allo](https://forums.pimoroni.com/u/allo)
#### Post date: [July 21, 2016, 5:12pm UTC](https://forums.pimoroni.com/t/color-transfer-with-envirophat-and-unicornphat/2703/3 "2016-07-21T17:12:30Z")
For a more sophisticated implementation you may want TCPServer and StreamRequestHandler, but i had some issues with disconnected sockets and to keep it simple (i.e. almost no error handling) i just switched to udp.
I did not manage to transfer a blinking bike rear light, i guess either the sensor or the led switching just isn’t fast enough.