Connection of Velleman PEM10D photocell to Chronopic
Authors: Josep Ma Padullés, Xavier de Blas. Chronojump project. April 2009.
Description
We want to connect one or more Velleman PEM10D photocells to the Chronopic.
Adventages of this photocell
- It's cheap (less than 70 euros in Spain)
- Response time (5-100 ms)
- Adjustable sensibility
- Input voltage AC-DC from 12 to 250V
- Relay output (pluggable to Chronopic)
- Being a known trademark, this product will be available long time on the market.
Instructions
- Velleman PEM10D photocell hsa 5 wires. Grey wire should be apart (unused), red and blue will be connected to alternating current connectors (see photo), finally black and white cables will be connected to RCA female.
- Connecting to RCA female
- Connecting to alternating current, and to Chronopic using an RCA male-male cable
- Circuit opened, Chronopic green light (D1) is ON
- Circuit closed, Chronopic green light (D1) is OFF
- Measuring time between two photocells connected to a single Chronopic using an RCA adaptor. Also a contact platform and a photocell can be connected. Just use your imagination.
In order to avoid problems with the movement of legs and arms on a run, we recomend you to put the photocells at head height, or to join some photocells vertically and create a connection that only closes circuit when ALL are closed.
Discuss this information on the forum: Connectiong photocells Velleman PEM10D to the Chronopic (Chronojump forum).
Josep Ma Padullés, Xavier de Blas.
